Chemistry Answers

A farmer wanted to increase his crop production and decided to add Potassium-rich fertilizer to his field. 
Rank the following fertilizers based on increasing order of K% (1 - lowest, 5 - highest)
KCl, K2SO4, KNO3, K2SO4.MgSO4, KCl + NaCl + MgSO4?

 I. Express the rate of the following chemical reactions in terms of the change in concentration of the reactants or products. .  

a.       2NH₄NO₃(aq) →   2N₂(g) + O₂(g) + 4H₂O(l)

b.       C₂H₅OH +  3O₂   →  2CO₂  + 3H₂O

c.        TiCl₄(s)  +  2H₂O(g)  → TiO₂(s) +  4HCl(g)

If 2.5 mols of oxygen gas was available to react with excess hydrogen, how many grams of water would be produced?

2H₂ + O₂ --> 2 H₂O

ow many grams of C₅H₈ are needed to produce 216 grams of H₂O?

what mass of a sugar based marshmallow (C12H22O11) should I completely burn over a campfire to get 3.25 grams of carbon?

Which is not Gibbs-Duhem equation?

A. n 1 dµ 1 + n 2 dµ 2 =0

B. dµ 1 / dµ 2 = -n 2 /n 1

C. dµ 1 / dµ 2 = n 2 /n 1

D. n 1 dµ 1 = - n 2 dµ 2

Elements from the same group shows similar chemical properties". 

Using scientific knowledge and understanding state why elements from the same group shows similar chemical properties.

Calculate the number of atoms of Na in 0.25 mole in sodium oxide

What are the empirical and molecular formulas of a compound that is 40.27% potassium, 26.78% chromium, and 32.95% oxygen? The molar mass of the compound is 194.2 g/mol.

Tartaric acid (C4H6O6) is naturally found in fruits like grapes and banana. It is used in the food industry as a leaving agent that gives a sour taste. Determine the percent composition of each element in the compound.